<table>
  <tbody>
    <tr>
      <th rowspan="2">Name</th>
      <th rowspan="2">Number</th>
      <th colspan="3">Some dates</th>
    </tr>
    <tr>
      <th>First date</th>
      <th>Second date</th>
      <th>Third date</th>
    </tr>
    <tr>
      <td id="a">First named entity</td>
      <td style="text-align: center">12</td>
      <td>May 11, 2011</td>
      <td>February 6, 2012 (note)</td>
      <td id="b">June 3, 2014</td>
    </tr>
    <tr>
      <td>Other named entity</td>
      <td style="text-align: center">20</td>
      <td>October 18, 2004</td>
      <td>July 6, 2005 (other note)</td>
      <td>September 30, 2009</td>
    </tr>
  </tbody>
</table>
